After graduating from college, Stevens was a full-time homemaker. In the LDS Church, she has served at a local level as a Relief Society president, Young Women president, counselor in the Primary presidency, and a gospel doctrine teacher.

Stevens was called to be the first counselor in the Primary General Presidency at the church's April 2010 general conference.[10][3] Stevens had previously been a member of the Primary general board.[3] The Primary directs programs for LDS children up to age 12.[11]

On April 6, 2013, Stevens became the first woman to pray in an LDS Church general conference when she offered the benediction in the first session of the church's 183rd Annual General Conference.[12][13][4][5][6][14] In January 2013, a feminist group had launched a letter-writing campaign to LDS Church leaders requesting that Mormon women be invited to pray in general conference, but a church spokesman stated that Stevens had been assigned to pray in the session before the campaign had started.[5] Women had led prayers previously at LDS events other than the General Conference.[13]

Stevens 2014 article in Ensign magazine, "Fear not, I am with thee," is often quoted in works of piety.[15][16][17]

On April 4, 2015, Stevens was released from the Primary General Presidency when she was called, with her husband, to lead church's London England Mission.[11][18][9][19][20]